Window-chair.



H. J. PREY. wmnow 0mm.

APPLICATION FILED NOVf27, 1907.

Patented Oct. 20, 1908.

' dows.

HENRY i. FREY, on PITTSBURG, PENNSYLVANIA.

WINDOW-CK AIR.

Specification 0! Letters Patent.

Patented Oct. 20, 1908.

Application ined November 27, 1007. Serial No. 404, 17.

I '0 all whom it may concern:

Be it known that I, HENRY Y J. FREY, a citizen of the United States of America, re-

siding at orth Side, Pittsburg, in the county 1 of Allegheny :and State of Pennsylvania, have invented certain new and useful Improvements in \Vindow-Chairs, of which the following is a specification, reference being. had therein to the accompanying drawing. This invention relates to window chairs, particularly designed for janitors for cleanin -the windows of buildings.

lhe primary object of myinvention is to rovide a chair that can be easily and quiclc. fastened to the sill of a window, to insure perfect safety of a person upon the outer side of a bui ding when cleaning Win- Another object of this invention is, to provide a portable window chair or scafi'old that can be used by janitors, painters and such artisans when cleaning or decorating the exterior of a building. In this connection, the invention is also designed'for residences and can be conveniently used for the purpose above specified. In construction theseat is extremely simple, durable, and highly efficient for the purpose for which it is intended.

iVith the above and other objects in View, the invention consists in the novel construction, 'combination and arrangement of parts to be hereinafter described, and then specifically pointed out in the appended claims. In the drawings: Figure 1 is an elevation of a window chair as secured to a window sill, l ig. 2 is a longitudinal sectionalview of the same, lfi ig. 3 is a bottom plan view of the chair, and Fig. 4 is a cross sectional View of a portion of the chair.

To put my invention into practice, I construct a chair which can be readily used as such or as a window-chair, platform or scaffold. The seat comprises a seat 1 having side arms 2, front legs 3, and a back 4 terminating in rear legs The bottom of the seat 1 is provided withlongitudinally disposed cleats 6, these cleats being arrai'lged in two sets toserve functionally as guides for plates 7.

The front legs 3 are connected by a brace 8 cut away as at 9 to permit of the ends of the plates 7 protruding in front of the seat, as will be presently described.

The plates 7 are provided with blocks 10 supporting transverse'bars 11 and depend ing clamping members 12, these clamping members being arranged at an angle to the plate 7, whereby when the' seat is placed upon a window-sill, said clamping members besides engaging the outer side, of the building will support the projecting part of the seat. This is clearly shown in Fig. 1 of the drawings, where 13 designates the window sill of a building 14. The clamping me1nbers 12 are further braced by longitudinally disposed bars 15 and angle plates 16, these plates being secured to the outer sides of the clamping members 12 and the bars 15.

The transverse bars 11 carry interiorly threaded bearings 17 for a longitudinal screw 18, said screw having its forward end revolubly held in the brace 8 by collars 19. This end of the screw terminates in a rectangular shank 20, whereby a crank'handle, wrench or similar instrument (not shown) can be placed upon the screw 18 to move the clamping members 12 into and out of. enf gagement with the building, The rear end of the screw is'threaded in the bearings 22 carried by the rear edge of the board 1.

To protect the window-sill 13 from being marred by the chair, I arran e a felt 21 or similar material. under the oard l and in the rear of the front, legs 3.

It is thought that the manner of clamping the. chair to a window-sill will be fully understood, besides the fact that the seat can be used as an ordinary chair when not employed for the main purpose above specified.

a It is obtions that such changes in the size, proportion and minor details of the invention as are pern'iissiblc by the appended claims can be resorted to without departing tron-1 the scope of the invention.

Having now described my invention what I claim as new, is

A Window chair comprising a seat, two

sets of cleats secured to the lower face thereof,"

each set arranged at one side of the center ofthe seat, a slidable plate positioned between the cleats of each set, a pair of blocks suitably spaced apart and depending from the lower face of each of said 'lates, said blocks of less width than the width of the plates, an angularly disposed clamping member depending from each set of plates and abutting against the blocks carried by its respective plate, a pair ofbars'arranged below a cleat of each set of cleats and having their ends abuttingagainst the clamping members and fixedly secured to the blocks, a brace secured to the front of ti e eat and depending from the lower face thereof, said brace cut away to permit of the passage of 5 said plates, a screw bearing secured to the rear of the seat depending from the lower face thereof, screw bearings carried by the bars, a rotatable screw extending through said brace engaging in the screw bearing 10 secured to the seat and engaging the screw bearings carried by the bars, said screw in connection with said bearings adapted when rotated to shift the plates whereby the clamping members are adjusted.

In testimony whereof I aflix my signature 15 in thepresence of two witnesses.

HENRY J. FBEY. Witnesses:

MAX H. Snonovrrz, A. M. WILSON. 

